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Finding the Fourth Proportional to 79,665.10, 119,470.11 and 35,322.87

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Solution

The fourth proportional to 79,665.10, 119,470.11 and 35,322.87 is: 52,972.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,665.10 : 119,470.11 = 35,322.87 : x
  2. Step 2: Convert to fraction form
    79,665.10/119,470.11 = 35,322.87/x
  3. Step 3: Cross multiply
    79,665.10x = 119,470.11 × 35,322.87
  4. Step 4: Simplify right side
    79,665.10x = 4,220,027,164.42
  5. Step 5: Solve for x
    x = 4,220,027,164.42/79,665.10
  6. Step 6: Final answer
    x = 52,972.09

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.